#rm -rf /dev/ppp
#mknod /dev/ppp c 108 0

apt-get purge pptpd ppp bcrelay
rm -rf /etc/pptpd.conf
rm -rf /etc/ppp
rm -rf /etc/sysctl.d/pptpd
rm -rf /etc/iptables.conf
rm -rf /etc/network/if-pre-up.d/iptables